腳踏車變速的原理? - 自行車
By Callum
at 2012-09-15T00:00
at 2012-09-15T00:00
Table of Contents
Q:如果想要騎快一點,可是要很用力的踩,要調成怎樣?(調成數字幾時,齒輪是多少)我不太會講自己的問題,sorry
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自行車
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By Lucy
at 2012-09-16T05:42
at 2012-09-16T05:42
By Caitlin
at 2012-09-17T05:16
at 2012-09-17T05:16
By Queena
at 2012-09-15T20:45
at 2012-09-15T20:45
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